S-90474A147 0.406" ID x 0.734" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanized steel construction, ideal for harsh industrial and outdoor environments
• Precise dimensional fit with 0.406" ID and 0.734" OD, ensuring reliable performance with 3/8" screws
• Enhanced load distribution through uniform thickness (0.056-0.071"), reducing surface stress and fastener failure
• Industry-standard compliance with ASME B18.21.1, guaranteeing consistent quality and interchangeability
• Environmental safety assurance with full RoHS 3 and REACH compliance, meeting strict regulatory requirements
• Durable long-term performance in demanding applications like construction and heavy machinery assembly
• Cost-effective maintenance solution by preventing corrosion-induced replacements and downtime

Professional Applications & Engineering Value

This galvanized steel flat washer is engineered to address critical challenges in industrial fastening, where corrosion resistance and dimensional accuracy are paramount. The zinc coating provides a protective barrier against moisture and chemicals, significantly extending service life in construction, machinery, and outdoor installations. With precise 0.406" ID and 0.734" OD dimensions, it ensures optimal load distribution for 3/8" screws, preventing loosening under vibration and reducing joint failure risks. Compliance with ASME B18.21.1 standards guarantees reliable performance in high-stress environments, making it a trusted component for engineers and contractors seeking durable, RoHS and REACH compliant solutions that minimize maintenance and enhance operational safety.

Specification Summary & Compliance

This flat washer features inch system dimensions: Internal Diameter of 0.406", Outer Diameter of 0.734", and Thickness ranging from 0.056" to 0.071", designed for use with 3/8" screws. It conforms to ASME B18.21.1 specifications for dimensional and mechanical requirements, ensuring precise fit and function. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial applications.